Q:
Is there a setting that needs to be set for the menu for html to differentiate between the two menus instantiations?
I have a web site in which I am using DHTML Menu in the top
frame as a menu for html and a menu for html in the lower frame that uses it as a menu in the same frame. However, if a user
selects the menu for html in the upper frame they get the menu for html that is
associated with the menu for html of the lower frame. The configuration
files are names differently.

A:
I suppose that you call dmenu.js file for the menu for html for two times on your site in the tag.
You must have only one entry of dmenu.js file.
Please, delete the same code.
You should write so: